Problem 4 (12 points): Define the sets X={a,b,c} and Y={1,2}. Show the set XY by listing the elements with set notation. Problem 5 (12 points): Define the following sets: - A={1,2,6} - B={2,3,4} - C={5} - D={xZ:1x6} Do A, B, and C form a partition of D? If not, which condition of a partition is not satisfied